Twitter Tickets (UK only) will update you of any tickets for any city you choose to follow.

Twitter Minific allows you to share short fiction.

Tweat What You Eat offers you to track what your diet through your phone, IM or the web.

So in a word, we now have Twitter-style diets, Twitter-style online services, and even Twitter-style fiction, custom Twitter backgrounds. What’s more? How many people are actually using these applications? Is it going to blow?